COX

Reduced hepatic lipid contents and alleviated liver injury in EC-AMPK mice treated with selective COX-2 inhibitors. Wild-type and EC-AMPK mice given a high fat diet were treated with vehicle, celecoxib or nimesulide for a period of 4 weeks. At the end of treatment, parameters including body weight and circulating glucose (A), serum triglyceride and cholesterol levels (B were measured and presented as percentage comparisons against those from vehicle-treated wild-type mice. *P < 0.05 versus wild-type mice treated with vehicle; #P < 0.05 versus EC-AMPK mice treated with vehicle, n = 3-5.

Cellular senescence and SIRT1 phosphorylation was monitored in PAECs (P2) incubated in DMEM containing HDL (50 mg/L), LDL (50 mg/L), or resveratrol (100 μM) for 24 hours.

(d) Parental and regorafenib-resistant HCT116 cells were treated with 40 μM regorafenib, 20 μM sorafenib, 1 μM UCN-01, 1 μM YM-155, 10 μM roscovitine, 15 μM sunitinib, 10 μM crizotinib, 10 nM TRAIL, 10 μM VX680, 20 μM etoposide, 20 μM temsirolimus or 120 μM sulindac sulfide for 48 h. Apoptosis was analyzed as in b. (e) Western blotting of Mcl-1 in parental and regorafenib-resistant HCT116 cells treated with indicated agents as in d for 24 h. Results in (b-d) represent the means±s.d. of three independent experiments. NS, P>0.05; *P<0.05; **P<0.01.

Dexamethasone and largazole cooperate to suppress invasion and to restore E-cadherin localization to the cell peripher y. ( a) Phase contrast micrographs showing morphological changes in MDA-MB-231 cells induced by E-cadherin expression combined with 100 nM dexamethasone and 10 nM largazole treatments. Insets show the cells at higher magnification. (b ) Fluorescence (E-Cad-GFP) or immunofluorescence microscopy (g -catenin (g-Cat.)) of 231/E-Cad-GFP cells treated for 72 h with vehicle (Control), 100 n M dexamethasone, 10 nM largazole or 100 nM dexamethasone + 10 nM largazole (Dex. + Larg.). (c ) Invasion assays were per formed with the indicated cell lines treated for 72 h with or without 100 nM dexamethasone + 10 nM largazole using modified Boyden chambers impregnated with matrigel. The results are presented as the average number of cells that invaded through the membrane per field s.d. of five randomly chosen fields, and are representative of three independently per formed experiments.

(a) Treatment of HeLa cells with 1 mM bufexamac results in the induction of HIF1-α, as determined by immunoblotting. The known hypoxia mimetics CPX and DFX were used as positive controls; vinculin served as loading control. (b) Verification of bufexamac-specific upregulation of HIF1-α. HIF1-α protein expression was analyzed 4 h after treatment of cells with the indicated compounds. Ac, acetylated. (c) Time-course analysis of HIF1-α induction by bufexamac. The induction of HIF1-α protein was analyzed by immunoblotting. The graph shows rapid stabilization of HIF1-α upon bufexamac treatment with half-maximal intensity I1/2 of about 75 min. Error bars represent s.d. of three independent experiments. (d) HIF1-α is stabilized only at higher concentrations of bufexamac and accumulates in the nucleus. Induction of endogenous HIF1-α and its nuclear accumulation was analyzed using immunofluorescence microscopy; scale bar, 10 μm.

TUNEL staining of treated adipocytes and flow cytometry analysis of positive TUNEL cells (n=3).

(B) HeLa and SACC-83 cells were treated with radiation, valdecoxib, or both radiation and valdecoxib. Cells were lysed or extracted for membrane proteins and then subjected to Western blot.

Nimesulide has no effect on KSHV lytic replication in BCBL-1 cells. The cells induced with TPA for 3 h were treated with the test compounds for 72 h. Then, the effect of nimesulide on cell viability (C) and the number of DNA copies (D) were measured as described in the Methods. CDV (20 µM) is a positive control for inhibiting viral DNA replication. Data were normalized as the fold change compared with the no-TPA induced control. The results are presented as the mean  values with standard deviations (n = 3).

Reduced hepatic lipid contents and alleviated liver injury in EC-AMPK mice treated with selective COX-2 inhibitors. Wild-type and EC-AMPK mice given a high fat diet were treated with vehicle, celecoxib or nimesulide for a period of 4 weeks. At the end of treatment, parameters including body weight and circulating glucose (A), serum triglyceride and cholesterol levels (B were measured and presented as percentage comparisons against those from vehicle-treated wild-type mice. *P < 0.05 versus wild-type mice treated with vehicle; #P < 0.05 versus EC-AMPK mice treated with vehicle, n = 3-5.

Cellular senescence and SIRT1 phosphorylation was monitored in PAECs (P2) incubated in DMEM containing HDL (50 mg/L), LDL (50 mg/L), or resveratrol (100 μM) for 24 hours.

(d) Parental and regorafenib-resistant HCT116 cells were treated with 40 μM regorafenib, 20 μM sorafenib, 1 μM UCN-01, 1 μM YM-155, 10 μM roscovitine, 15 μM sunitinib, 10 μM crizotinib, 10 nM TRAIL, 10 μM VX680, 20 μM etoposide, 20 μM temsirolimus or 120 μM sulindac sulfide for 48 h. Apoptosis was analyzed as in b. (e) Western blotting of Mcl-1 in parental and regorafenib-resistant HCT116 cells treated with indicated agents as in d for 24 h. Results in (b-d) represent the means±s.d. of three independent experiments. NS, P>0.05; *P<0.05; **P<0.01.

Dexamethasone and largazole cooperate to suppress invasion and to restore E-cadherin localization to the cell peripher y. ( a) Phase contrast micrographs showing morphological changes in MDA-MB-231 cells induced by E-cadherin expression combined with 100 nM dexamethasone and 10 nM largazole treatments. Insets show the cells at higher magnification. (b ) Fluorescence (E-Cad-GFP) or immunofluorescence microscopy (g -catenin (g-Cat.)) of 231/E-Cad-GFP cells treated for 72 h with vehicle (Control), 100 n M dexamethasone, 10 nM largazole or 100 nM dexamethasone + 10 nM largazole (Dex. + Larg.). (c ) Invasion assays were per formed with the indicated cell lines treated for 72 h with or without 100 nM dexamethasone + 10 nM largazole using modified Boyden chambers impregnated with matrigel. The results are presented as the average number of cells that invaded through the membrane per field s.d. of five randomly chosen fields, and are representative of three independently per formed experiments.

(a) Treatment of HeLa cells with 1 mM bufexamac results in the induction of HIF1-α, as determined by immunoblotting. The known hypoxia mimetics CPX and DFX were used as positive controls; vinculin served as loading control. (b) Verification of bufexamac-specific upregulation of HIF1-α. HIF1-α protein expression was analyzed 4 h after treatment of cells with the indicated compounds. Ac, acetylated. (c) Time-course analysis of HIF1-α induction by bufexamac. The induction of HIF1-α protein was analyzed by immunoblotting. The graph shows rapid stabilization of HIF1-α upon bufexamac treatment with half-maximal intensity I1/2 of about 75 min. Error bars represent s.d. of three independent experiments. (d) HIF1-α is stabilized only at higher concentrations of bufexamac and accumulates in the nucleus. Induction of endogenous HIF1-α and its nuclear accumulation was analyzed using immunofluorescence microscopy; scale bar, 10 μm.

TUNEL staining of treated adipocytes and flow cytometry analysis of positive TUNEL cells (n=3).

(B) HeLa and SACC-83 cells were treated with radiation, valdecoxib, or both radiation and valdecoxib. Cells were lysed or extracted for membrane proteins and then subjected to Western blot.

Nimesulide has no effect on KSHV lytic replication in BCBL-1 cells. The cells induced with TPA for 3 h were treated with the test compounds for 72 h. Then, the effect of nimesulide on cell viability (C) and the number of DNA copies (D) were measured as described in the Methods. CDV (20 µM) is a positive control for inhibiting viral DNA replication. Data were normalized as the fold change compared with the no-TPA induced control. The results are presented as the mean  values with standard deviations (n = 3).